Bounded composition operators on functional quasi-Banach spaces and stability of dynamical systems

Abstract

In this paper, we investigate the boundedness of composition operators defined on a quasi-Banach space continuously included in the space of smooth functions on a manifold. We prove that the boundedness of a composition operator strongly restricts the behavior of the original map, and it provides an effective method to investigate the properties of composition operators using the theory of dynamical system. Consequently, we prove that only affine maps can induce bounded composition operators on any quasi-Banach space continuously included in the space of entire functions of one variable if the function space contains a nonconstant function. We also prove that any polynomial automorphisms except affine transforms cannot induce bounded composition operators on a quasi-Banach space composed of entire functions in the two-dimensional complex affine space under several mild conditions.

arXiv commentWe roll back to the unweighted version. It is published in Advances in Mathematics. We will write another paper for weighted cases

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Cited by in corpus (1)

• Koopman operators with intrinsic observables in rigged reproducing kernel Hilbert spaces